Mold for manufacturing wheelbarrow-wheels



No. 749,556. 7 PATENTED JAN. 12, 1904.

A T. 1). HARRIS.

MOLD FOR MANUFACTURING WHEELBARROW WHEELS.

APPLIOATIOH FILED AUG. 29, 1903.

NO MODEL. A 2 SHEETS-SHEET 1.

No. 749,556. I PATENTED JAN. 12, 1904.

' T. D. HARRIS.

MQLD FOR MANUFACTURING WHEELBARROW WHEELS.

APPLIUATION-PILED AUG; 29, 1903.

H0 MODEL. 2 SHEETS-SHEET 2.

A i W A mu tnr: zu rb. I I M M '1 3 31mm: w

m: MlRRlSyiITiRS co, Pnmnumd. wxwmcnoa4 u c UNITED STATES PatentedJanuary 12, 1904.

PATENT OFFICE.

THOMAS DOW HARRIS, OF ASHBORO, NORTH CAROLINA, ASSIGNOR OF ONE-HALF TOEMMETT LEONIDAS MOFFITT, OF ASHBORO, NORTH CAROLINA.

MOLD FOR MANUFACTURING WHEELBARROW-WHEELS.

SPECIFICATION forming part of Letters Patent No. 749,556, dated January12, 1904. I

Application filed August 29, 1903.

Wheelbarrow-Wheels, of which the following is a specification.

My mvention relates to certain lmprovements 1n the manufacture ofwheelbarrowwheels, more especially molds therefor.

It has for its object chiefly to simplify construction, expedite theoperation, and to provide for quickly and effectively ejecting ordislodging the casting.

Said invention consists of a mold of peculiar construction substantiallyas hereinafter more fully disclosed, and specifically pointed out by theclaims concluding the following description.

In the accompanying drawings, illustrating the preferred embodiment ofmy invention, Figure 1 is a plan view thereof in open position. Fig. 2is a perspective view of the same in closed position. Fig.' 3 is acentral transverse section produced on the line w as of Fig. 1. Fig. 4is an inside view of one mold-section. Fig. 5 is a similar View of thecompanion moldsection.

In the carrying out of my invention I provide a two-part or sectionalmold 1 l, suitably adapted to receive the core to produce the desiredcasting, the same being for the purposes of this invention a tubularcylindric bearing. Said mold has its sections or parts, one of which isstationary and the other movable or sliding, adapted to be broughtcompactly together, one part or section having studs or guides 1 1passing transversely through its companion section and extending somedistance beyond the latter when said sections are in contact, as whenready for the casting operation, said studs or projections having pinsor stops 1 near their outer ends to limit the i movement of the slidingsection. Said moldsections are provided with vertical meeting recessesor depresslons, wlth upper outwardlyflared enlargements, whlch .recessesand, en-

Serial No. 171,272. (No model.)

largement constitute the gate or sprue 3 for the pouring of the moltenmetal thereinto. One mold-section has suitably incased or housed inconnection therewith, as at 4:, a spring-retractible plunger 4L, movablewithin a passage intersecting the pouring opening or gate, -saidplunger, therefore, normally being withdrawn or retracted from said gateor sprue, the means for actuating which and when done will be presentlyreferred to. The other or sliding moldsection has suitably connectedthereto, as at 5, a hand-actuated lever 5, itself suitably connected,preferably, by a pivoted link 5 to a base-piece bearing the fixed orstationary mold section, said link being limited in its movement by anoffset or angular arm 5, also secured to said base-piece. To said lever5 is connected intermediately of its handle and its point of connectionwith the part 5 an angular bar or arm 6, one end of which is linked, asat 6, to said lever 5 and having its other end opposed to the plunger4:. Thus it will be seen that as said lever 5 is moved to separate themold-sections, as when the casting is removed after the castingoperation, the arm 6 is caused to simultaneously move the plunger 4 intothe plane of the gate or sprue 3, and thus eject the neck or elongationof the bearing-casting from said sprue or gate, accordingly effectingthe dislodgment of said bearing-casting from the stationarymold-section. The movable mold -section has preferably dowel pins orprojections 1 entering registering apertures in the stationarymold-section to aid in bringing and retaining the moldsections in truealinement. The core being in position in the mold-sections and thelatter closed and the molten metal poured into the sprue or gate, thesame filling the mold, the result will be productive of abearing-casting of an outline or contour agreeable thereto. Thus it willbe observed that the casting operation is quickly performed by the useof my mold and the casting ejected or removed from said mold withfacility and expedition, while the mold is simple in construction,easily operated, and can be manufactured at the minimum cost.

sprue, a lever suitably pivoted in position and connected to the movablemember and carrying an arm adapted to actuate said plunger.

2. A mold of the character described, comprising duplicate members, onemember having a spring-retracted plunger arranged to enter the gate. orsprue, means for housing the means for automatically retracting saidplunger,-a hand-lever suitably pivoted in position and connected to themovable member, and an arm connected to said hand-lever and adapted toactuate said plunger.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

THOMAS DOW HARRIS.

Witnesses:

SAMUEL FRANKLIN PHILLIPS, ELIJAH MOFFITT.

